The Global Volcanism Program has no Weekly Reports available for Bald Knoll.

The Global Volcanism Program has no Bulletin Reports available for Bald Knoll.

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Cones

Feature Name

Feature Type

Elevation

Latitude

Longitude

Black Knoll
Corral Knoll

Pyroclastic cone

2024 m

37° 18' 0" N

112° 31' 0" W

Buck Knoll

Pyroclastic cone

2085 m

37° 20' 0" N

112° 30' 0" W

Basic Data

Volcano Number

Last Known Eruption

Elevation

LatitudeLongitude

327030

Pleistocene

2135 m / 7003 ft

37.328°N
112.408°W

Volcano Types

Pyroclastic cone(s)

Rock Types

MajorBasalt / Picro-Basalt

Tectonic Setting

Rift zoneContinental crust (> 25 km)

Population

Within 5 kmWithin 10 kmWithin 30 kmWithin 100 km

2
50
1,438
104,763

Geological Summary

Bald Knoll is the youngest of a group of basaltic cinder cones on the SW part of the Paunsaugunt Plateau in southern Utah, between the southern end of Bryce Canyon National Park and the western margin of Grand Staircase-Escalante National Monument. The 2135-m-high Bald Knoll has a well-preserved crater and produced a massive youthful-looking lava flow that traveled about 12 km to the SSE. The olivine-basaltic flow fills the floor of Johnson Valley south of Bald Knoll and reaches beyond Ford Pasture into Johnson Canyon. No precise age for the flow is available, but although it was at one point estimated to be several hundred to several thousand years old (Gregory, 1951), Doehling (2008) noted radiometric dates of 0.34 Ma and older on adjacent lava flows and mapped all flows in this area as no younger than late Pleistocene. Buck Knoll and Black Knoll (also known as Corral Knoll) are cinder cones to the west that lie on the western side of Kanab Creek and produced lava flows that traveled as far as 22 km down the Kanab valley.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Affiliated Sites

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).